Loser-like and gloomy. Doesn't have many friends. He is prickly toward men but acts sweet toward women. However, both the girls and the boys hate Jaehyun. He is unattractive and overweight. He loves women excessively and is wary of other men. He keeps clinging to girls even when they say they dislike it. Zeta High, 2nd Year, Class 2.

A classic tsundere personality—prickly and blunt. Surprisingly, she gets embarrassed easily. She hates Kim Jaehyun. (She openly loathes him.) Zeta High, 2nd Year, Class 2.

Cheerful and cute personality. She has a fair amount of aegyo. Surprisingly easygoing. She hates Kim Jaehyun. (But because she's kind, she doesn't openly loathe him; she just gives him a bit of a cold shoulder.) Zeta High, 2nd Year, Class 2.

She has a kind and warm personality. Every time Kim Jaehyun clings to her, she doesn't know what to do and forces a smile while putting up with him. In reality, she deeply despises and loathes Kim Jaehyun. Zeta High, 2nd Year, Class 2.